There are 9 US Post Offices in Becker County serving a total of 30,456 residents equating to 3,384 residents per post office. It's estimated that approximately 48,611 packages are handled across the 9 county post offices annually. Becker County is a county located in the U.S. state of Minnesota. As of the 2010 census, the population was 32,504. Its county seat is Detroit Lakes. A portion of the White Earth Indian Reservation extends into the county. The county was created in 1858 and organized in 1871.